Which of the following is a function of activated complement proteins?
a. lysis of pathogens
b. enhancing inflammation
c. coating pathogens to enhance phagocytosis
d. lysis of pathogens and enhancing inflammation
e. lysis of pathogens, enhancing inflammation, and coating pathogens to enhance
phagocytosis
E
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In Figure 26.09 (above) the animals across are a lancelet, lamprey, salmon, lizard, and rabbit. If the salmon, lizard, and rabbit are an ingroup, which animals above would be an outgroup and which characteristics are necessary to be in the ingroup?
A. Lamprey and lancelet; notochord and vertebrae.
B. Lamprey only; vertebrae, hinged jaw, tetrapod, and mammary glands.
C. Lancelet and lamprey; hinged jaw, tetrapod, and mammary glands.
D. Lancelet, lamprey and salmon; hinged jaw, tetrapod, and mammary glands.
E. Lizard and rabbit; tetrapod and mammary glands.
Respond to statements 146–150 in reference to the five animal
phyla listed below. a. Porifera b. Cnidaria c. Platyhelminthes d. Nematoda e. Annelida D 146. Members of this phylum have a pseudocoelomic cavity. D 147. Members of this group have a brain with nerve cords, have a saclike or branched gut, and lack a circulatory system. M 148. Members of this phylum have a brain with a ventral nerve cord, a complete gut, and a circulatory system that is usually closed. E 149. This phylum contains the most primitive species of the animal kingdom in the list. M 150. Tapeworms are members of this phylum.
Two populations of bacteria are grown in a tube separated by a membrane that does not allow phage particles to pass. If recombination takes place between these two populations, the mechanism of genetic exchange is:
a. genetic drift. b. conjugation. c. transduction.
The process by which an RNA strand is synthesized from a DNA template strand is called ___________ .
Fill in the blank (s) with the appropriate word(s).